photobiker
Member
There you go. Mike has the answer. I built a few similar. I used a 4x4 about 6" long and drilled a hole in each end on a 45 degree angle and they meet in the middle, oh heck here is a pic.
Basically drill 2 holes, say 3/8", in the ends on a 45 degree angle more or less (depends on the length of your 4x4) and they should meet in the middle. Drill a hole upward from the bottom to meet the 2-45 degree angle holes. Next enlarge the bottom hole large enough to hold the top to a water bottle. May want to do this first depending of the tools you are using. Glue the top in place, after you drill out the inside of the top.
Done. I trapped 20+ carpenter bees this year in the one trap. No holes in my deck or trim.
The story is they go up the angle and down into the bottle and can't find their way out and they die.

Basically drill 2 holes, say 3/8", in the ends on a 45 degree angle more or less (depends on the length of your 4x4) and they should meet in the middle. Drill a hole upward from the bottom to meet the 2-45 degree angle holes. Next enlarge the bottom hole large enough to hold the top to a water bottle. May want to do this first depending of the tools you are using. Glue the top in place, after you drill out the inside of the top.
Done. I trapped 20+ carpenter bees this year in the one trap. No holes in my deck or trim.
The story is they go up the angle and down into the bottle and can't find their way out and they die.